TheBoringPianist
Not going to say too much about the Piano de Voyage since I've already done my own review video a few months ago.
I came across a Y-T video posted by a professional musican who took the keyboard to gigs as a substitute for a regular keyboard. In public performances people rely on external speakers + amplifier to give a sound boost so wouldn't make a difference if the keyboard has no built-in speakers. It's ok to be playing Jazz or Pop style music.
Learning a "Classical" piece on a keyboard with semi-weighted keys is ok. Switching back to the regular keyboard with fully weighted keys takes a few minutes warmup. Playing technical runs on soft-touch keys a finger tends to stay down after each key press unless you're consciously lifting it. Otherwise notes would overlap since the keys don't have any resistance to come back up after they're pressed.
Guess when you're on a flight, you don't want a keyboard that is too heavy. On my last trip I was able to fit the Piano de Voyage and the Folding Piano 88 from Carry-on in the same suitcase. When it comes to the piano sound & action, the Piano de Voyage isn't too bad. Other portable keyboards tend to give a rather artificial defaut piano sound.